init-param and context-param

Question

What is the difference between and !?

Answer 1

 
    contextConfigLocation
    
        classpath*:/META-INF/PersistenceContext.xml
    

I have initialized my PersistenceContext.xml within because all my servlets will be interacting with database in MVC framework.

Howerver,

    jersey-servlet
    com.sun.jersey.spi.spring.container.servlet.SpringServlet
    
        contextConfigLocation
        
            classpath:ApplicationContext.xml
        
    
    
        com.sun.jersey.config.property.packages
        com.organisation.project.rest
    

in the aforementioned code, I am configuring jersey and the ApplicationContext.xml only to rest layer. For the same I am using